Texas Instruments CD54HC221
The ’HC221 and CD74HCT221 are dual monostable multivibrators with reset.| Part No. | CD54HC221 |
|---|---|
| Datasheet | CD54HC221 Download |
| Manufacturer |  Texas Instruments |
| Description | Dual Monostable Multivibrator |
| Buy | Stock & Price |
FEATURES
DESCRIPTION
● Overriding RESET Terminates Output Pulse● Triggering from the Leading or Trailing Edge
● Q and Q Buffered Outputs
● Separate Resets
● Wide Range of Output-Pulse Widths
● Schmitt Trigger on B Inputs
● Fanout (Over Temperature Range) - Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads - Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
● Wide Operating Temperature Range . . . -55oC to 125oC
● Balanced Propagation Delay and Transition Times
● Significant Power Reduction Compared to LSTTL Logic ICs
● HC Types - 2V to 6V Operation - High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V
● HCT Types - 4.5V to 5.5V Operation - Direct LSTTL Input Logic Compatibility, VIL= 0.8V (Max), VIH = 2V (Min) - CMOS Input Compatibility, Il ≤ 1µA at VOL, VOH Pinout CD54HC221 (CERDIP) CD74HC221 (PDIP, SOIC, SOP, TSSOP) CD74HCT221 (PDIP, SOIC) TOP VIEW 1A 1 1B 2 1R 3 1Q 4 2Q 5 2CX 6 2CXRX 7 GND 8 16 VCC 15 1CXRX 14 1CX 13 1Q 12 2Q 11 2R 10 2B 9 2A An external resistor (RX) and an external capacitor (CX) control the timing and the accuracy for the circuit.
